package com.iflyteck.coder;

import com.iflyteck.json.Serializer;
import com.iflyteck.pojo.RpcRequest;
import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.ByteToMessageDecoder;

import java.util.List;

public class RpcDecoder extends ByteToMessageDecoder {

    private Class<?> clazz;

    private Serializer serializer;

    public RpcDecoder (Class<?> clazz, Serializer serializer) {
        this.clazz = clazz;
        this.serializer = serializer;
    }

    @Override
    protected void decode(ChannelHandlerContext channelHandlerContext, ByteBuf byteBuf, List<Object> list) throws Exception {
        if (byteBuf != null) {
            int length = byteBuf.readInt();
            byte[] content = new byte[length];
            byteBuf.readBytes(content);
            RpcRequest request = serializer.deserialize(RpcRequest.class, content);
            list.add(request);
        }
    }
}
